Guardant Health said Chief Medical Officer Craig Eagle will resign effective May 8, marking a near-term leadership transition at the company focused on oncology liquid biopsy. Eagle previously held medical affairs oncology roles at Genentech and served earlier at Pfizer. Delfi Diagnostics appointed Charles Newton to its board of directors, bringing CFO experience from Lyell Immunopharma and investment banking senior leadership from institutions including Bank of America Merrill Lynch, Credit Suisse and Morgan Stanley. Singular Genomics named John Stark as its new CEO, with Stark previously leading spatial biology platform company Resolve Biosciences and protein sequencing platform Quantum-Si. Josh Stahl will shift to an independent director role.